Hailey Bieber Wore a Completely Sheer Black Gown at a Tiffany & Co. Party

It was a glitzy, celebrity-filled affair Wednesday night at Sunset Towers in West Hollywood, which served as the backdrop for a Tiffany & Co. party that brought out an array of style stars. From Hailey Bieber in a completely sheer black gown to Kim Kardashian in a monochromatic ensemble topped off with a leather duster — plus appearances from red carpet trendsetters Halsey and Lori Harvey — the soiree delivered a feast of fashion inspo.

Fresh off posing for a photo with Selena Gomez inside the Academy Museum Gala earlier this month — promptly leading to all of social media losing its cool — Bieber arrived at the Tiffany & Co. event in a totally see-through Saint Laurent black dress. The ankle-grazing silhouette sat atop a matching black bra and briefs set that could have doubled as a bikini. Strappy black stilettos, layered bracelets, small hoop earrings, and a necklace with a green pendant completed her daring look.

As for Kardashian, the 42-year-old reality TV star stepped out in head-to-toe black, anchored by leather pants and a matching oversize leather coat. Accessory-wise, she stacked on the bracelets and necklaces, mixing both gold and silver finishes, and added "Matrix"-inspired black sunglasses and tall black boots to pull it all together.

Elsewhere on the red carpet, Halsey sported an autumn-appropriate brown leather set from the Bronx and Banco spring 2023 collection. The fresh-off-the-runway 'fit featured a bold cutout detail at the front and gold hardware. Harvey — who just debuted a custom purple look designed by Ibrahima Gueye at the Wearable Art Gala — kept her wardrobe classic for this gathering, choosing a white top, black trousers, black heels and tights, and simple silver bracelets.

The Tiffany & Co. event marked the launch of its new Lock collection. Keep reading to see the most stylish moments from the celebs who were in attendance.